Lock



April 27, 1937. J. HOLTZMAN LOCK Filed Sem. 7, 1929 awww/tto@ Patented Apr. 27, 1937 UNITED STA/tins PATENT FFEQE 19 Claims.

This invention relates to locks of the type wherein a lugged bolt is projected from a casing into a keeper and then rotated, whereby the retraction of the bolt from its extended position is 5 prevented by the lugs thereof until said bolt is first rotated.

Various locks of this type have been heretofore in use but such locks are comparatively expensive and complicated in their structure. My inveny) tion contemplates the provision of a lock of the type above-mentioned which is easy to operate, simple and comparatively inexpensive to make, necessitating a comparatively small number of moving parts, and which is efficient in its operaj 5 tion.

C broken away to show the interior structure, said g.. thereto by screws ligure showing the bolts and the operating mechanism therefor in the retracted positions thereof. Fig. 2 is a vertical section of the same, taken on the line 2-2 of Fig. 1.

Fig. 3 is a rear View similar to Fig. 1, showing the parts in the projected or extended positions thereof.

Fig. 4 is a vertical section similar to Fig. 2 and taken on the line 4-4 of Fig. 3.

Fig. is a horizontal section of my improved lock, taken on the line 5--5 of Fig. 4, and showing the parts in the fully extended position of the bolt, but before it has been rotated.

5 Referring now to that embodiment of my invention shown by way of example in Figs. 1 to 5 inclusive, the casing I is provided with a rear cover plate I I adapted to rest against the shoulders I2 of the casing and to be suitably secured or the like in a manner well known in the art. While as shown, the casing lil is provided with two bolts and operating parts therefor. said bolts and parts are identical, and

a description of one will suffice for both. Said plate is preferably at along the right portion thereof, and curved at its left portion to provide slotted bearing surfaces for supporting certain parts, as will be more fully explained hereinafter.

At the keeper end of the casing, a hole as I3 5,0 is made in the end casing wall through which the lugged bolt i4 is passed, said bolt being adapted to pass through the enlarged opening I5 of the keeper I6 into the interior of the keeper. The hole i3 in the end wall of the casing is shaped 55 similarly to the lugged end Il of the bolt, that is,

said hole has a circular central portion of substantially the diameter of the cylindrical part I8 of the bolt, and is further provided with side eX- tensions I9 similar to and designed to receive the projecting lugs oi the bolt. The extreme end surface 2l of the bolt in its retracted position, is adapted to lie flush with the end surface 22 of the casing, and the lugs 2U are adapted to lie in the side extension openings I9, as well illustrated in Fig. 1.

The right hand end 23 of the bolt, as viewed in Figs. 1, 3, and 5 is preferably somewhat reduced in diameter as compared with the left-hand end I8, and is provided with a guide groove or channel 24 into which the inner end of the preferably hollow cylinder 25 is permanently inserted. Said cylinder 25 is suitably secured to the sleeve 26, loose on the bolt portion 23, and serves to connect the bolt to the sleeve for angular movement through the same angle, while allowing relative sliding movement. To cause the bolt and sleeve to move longitudinally together as a unit at the beginning of the bolt projecting operation and Y at the end of the bolt retracting operation, I provide suitable connecting means therebetween such as for example, the spring 2l inserted within the cylinder 25 and bearing with the requisite pressure upon the inner wall 28 of the channel 24 either directly or through the intermediary of a suitable member such as the ball 29 normally resting in the ball recess 3D made in the channel wall 2B. It will be understood, however, that the spring and ball may be omitted if desired, since the sleeve 26 may be so fitted to the bolt as to insure sufoient friction therebetween to cause them to move normally together.

For imparting axial or longitudinal movement to the bolt at the beginning of the projecting movement or at `the end of the retracting movement thereof, the sleeve 26 is operatively connectled to the movable front plate 3| as by means of a suitable pin, rivet or screw 32. Said front plate Il! is provided with a substantially vertical groove 33 running across the direction in which the bolt moves, and into which the pin 32 is inserted for imparting to the sleeve 26 its longitudinal movement while allowing rotary movement of said pin and of the sleeve 26 about the aXis of the bolt. At the upper and lower ends of said plate, guide members as 3.0. are bent therefrom, engaging suitable shoulders as 35 in the casing whereby said plate is held against movement towards the front of the casing or upwardly or downwardly, and is constrained to move longitudinally only.

VFor the purpose of supporting the sleeve 25 and f A movable plate .3|

-right end thereof and tudinal :movement of the bolt.

the bolt, the left end of the plate 3| is provided with a suitable curved portion 36 preferably in the form of a partial cylinder. The usual hand knob 31, pivoted in the front 38 of the casing is provided for projecting and retracting the bolt, being connected to the plate 3| through the intermediary of the crank 39 and pin 40. At the rear end of said pin, the segmental cylindrical member 4| is provided, the rear end of which member is adapted to be engaged by the pin 42 of the key-operated crank 43 so that the plate may be key-operated or knob operated manually as desired. A substantially upright slot as 53 is provided in the plate 3| for the passage of the knob actuated pin 49, whereby rotation of the knob 31 reciprocates the plate 3| vlongitudinally of the bolt in either direction to operate the bolt. A spring as 52 secured atone end to the member 4| and at the other end to the casing servesto normally maintain the crank 39 in either of its limiting positions and to aid in moving the plate 3| during the latter part of the reciprocatory strokeof Vthe plate.

The left-hand end 44 of the stationary rear plate II is shaped similarly to the front plate 3| land serves as a cover plate for the rear of the casing, butthe right ends of the plates Il and 3| vare preferably flat as best seen in Fig. 3. A cam 'groove 45 is made in the rear plate portion `44,

said groove being preferably horizontal at the inclined downwardly and toward the left at the left end thereof whereby the cylinder 25 which is inserted into said cam groove, and thesleeve l26 to-which itis secured,

.may move first longitudinallytogether with the Ybolt to .project the -bolt out of the casing, and

then forwardly and downwardly to cause rotation of the boltztogether with the sleeve aftcrthe bolt has been fully extended, while allowing llongitudinal movement of the sleeve relatively to the bolt, as will be seen from what follows.

N ear the left end of the reduced portion 23 of the bolt, I provide a suitable preferably radial stop or pin 46 which serves to engage the left inner end wall 41 of the casing for limiting the y projected position of the bolt, said pin being normally arranged to slide in the space or groove 48 between the plates 3| and I I during the longi- The plate Dortion 44, however, is suitably cut away vertically lasat :49 to allow said -Vpin to rotate with the bolt when the bolt is rotated.

The operation of my improved lock is as follows:

The parts being vin the position illustrated in Figs. 1 and 2, and it being'desired to project the bolt into locking position, the knob 31 is rotated in the Aproper direction to swing the crank 49 from the position shown in Fig. 1 toward the position shown in Fig. 3. Such rotation of the knob 31 kcauses Vthe pin `4i! to move upwardly in the slot 53 and ,imparts movement toward the left to the Said plate carries with it the pin Y32 and therethrough, carries the sleeve 26 toward the left. 'I'he ball 2.9 being at this time inthe Vdepression 39, and being prevented from leaving said depression by the pressure of the spring 21, movement of the sleeve 26 causes said ball 29 to carry the bolt I4 toward the left together with the sleeve 26 and the plate 3|, which moves longitudinally as a unit.

It will be understood that if desired, the ball 29 may be omitted and dependence had upon the direct engagement Aof the spring -21 with the wall 28 of the channel 24.

lzontal portion of the cam groove 45 until the extreme left of said horizontal portion is reached, while the inner end of the cylinder rests in the channel 24. This movement continues until the pin 46 has been brought into engagement with the wall 41 of the casing, the bolt being in fully extended position. Further rotation of the knob 31 continues the movement of the plate 3F and the sleeve 26 which now carries the outer end ofthe cylinder 25 into the inclined portion of the cam groove 45 whereby said pin moves downwardly as well as vtowards the left and begins to rotate about the axis of the sleeve. The pin 32 at this time moves upwardly in the vertical slot 33. The ball 29 is thereby drawn out of the ball recess 30 and slides along the surface of the channel wall 28. The rotary movement of the ,cylinder 25, however, now causes rotation of the shown in Fig. 3 continues to cause the sleeve 26 to move toward the left relatively tothe bolt I4 while the cylinder 25 forces the bolt to rotate with said sleeve as a unit until the outer end of said cylinder reaches the bottom of the groove 45, at which time the pin 43 is at the bottom of the slot 53 and the pin 32 is at the top of the slot 33.

In order to insure the movement of the sleeve 26 towards its extreme position at the left illustrated -in Fig. 3, said sleeve is recessed at its extreme left edge as at 50 for the reception of the pin l46 whereby the left end wall 54 of said `46 yentering the recess 59 when the cylinder 25 is 41 of the casing, said pin at the bottom of the cam slot 45.

It will be seen from Fig. 4 that in the fully extended and rotated position of the bolt I4, the lugs 29 thereof are turned at substantially right angles to the openings I9 in the end of the casing, so that the bolt cannot be retracted within the casing until it is rst rotated into a position wherein said lugs 20 are in alignment with the openings I9.

To so retract the bolt, the knob 31 is rotated in the proper direction to carry the plate 3| toward the right as viewed in Figs. l, 3, and 5. As said plate 3| moves towards the right, the cylinder 25 is rotated upwardly and toward the right by means of the inclined portion of the cam groove 45, while the pin 32 moves downwardly in the vertical groove 33 of the plate 3|, whereby the inner end of the cylinder 25 engages the channel walls 24 and causes rotation of the bolt. It will be understood that the bolt i4 and the sleeve 26 are rotated through precisely the same angle simultaneously by reason of the insertion of the Vcylinder 25 in the channel 24. The pin 46 there-4 Continued rotation of the 5 fore does not interfere with the rotation of the bolt since said pin rotates with the bolt. As the cylinder 25 moves upwardly in the cam groove 45, the sleeve 25 to which it is attached, moves towards the right relatively to the bolt Ill thereby disengaging the recess 5G from the pin 45.

The bolt is prevented from being retracted during this movement owing to the fact that the pin 46 engages the right wall 5| of the recess 49 so that no movement of the bolt towards the right is possible until the bolt has been rotated sufciently to bring the pin 4S into the space 48 between the plates 3l and ll (Fig, 2). When the rotation of the bolt has been fully completed and the pin do has reached the position described, the outer end of the cylinder 25 has entered the `horizontal portion of the cam groove t5 and the -ball 29 has dropped back into its groove 36 under Athe influence of the spring 2l whereby the bolt and sleeve are again connected and ready for longitudinal movement toward the right as a unit.

As the knob 3l is further rotated and the plate 3| carried still further toward the right, the lugs 20 of the bolt pass into the openings i9 and the bolt and sleeve with it brought back to their fully retracted positions illustrated in Fig. l.

It will be seen that I have provided simple and eflicient mechanism having a minimum number of parts and well adapted for the purposes intended and that while I have shown and described .certain specic embodiments oi my invention, I

do not wish to be understood as limiting myself thereto but intend to claim `my invention as broadly as may be permitted by the state of the prior art and the terms of the appended claims.

I claim:

1. In a lock, an extensible and rotatable bolt, and means for operating the bolt comprising a slotted movable plate disposed on one side of the bolt, a slotted stationary plate disposed on the other side of the bolt, a sleeve on said bolt between and sup-ported by the plates, said sleeve and bolt being longitudinally movable together as a unit, means for limiting the extension of the bolt, and means for rotating the bolt and the sleeve together in the projected position of the bolt.

2. In a lock, a longitudinally movable and rotatable bolt, a sleeve on said bolt, means for moving said bolt and sleeve longitudinally as a unit to project the bolt from the lock, and means for moving said sleeve longitudinally relatively to the bolt while rotating said sleeve and bolt together.

3. In a lock, a bolt, an operating member associated with said bolt, and means including a slotted plate for moving said bolt and member linearly as a unit at one time, and at a diierent time moving said member linearly relatively to the bolt but angularly together with the bolt.

4, In a lock, a pair of .grooved and oppositely disposed plates, one of said plates being movable, a bolt arranged between said plates, a sleeve l arranged about said bolt and supported between said plates, means for operatively connecting the sleeve and the movable plate, spring-pressed means secured to the sleeve and guided by the groove in the other plate for operatively connecting said bolt and said sleeve, and means for reciprocating said movable plate for moving said bolt and said sleeve longitudinally as a unit during one part of its movement and for giving said sleeve and said bolt angular motion through the same angle while said sleeve moves longitudinally relatively to said bolt.

5. In a lock, a bolt having a longitudinal channel therein, a casing having a perforated end therein through which said bolt may be projected, a sleeve arranged about said bolt and slidably and rotatably supported in said casing, means secured to said sleeve and entering the channel of said bolt for operatively connecting said bolt and said sleeve, and grooved cam plates supporting and guiding said sleeve for moving said sleeve and said bolt longitudinally as a unit and for rotating said sleeve in said bolt through the same angle, said sleeve moving longitudinally relatively to said bolt during the rotary movement.

6. In a lock, a longitudinally movable and rotatable bolt, a pin on said bolt for maintaining said bolt in its extended position, means for rotating said bolt and thereby withdrawing said 'i pin into inoperative position when the bolt is to be retracted and for sliding said bolt longitudinally into retracted position when the pin is in its inoperative position including a stationary slotted plate, a pin, free of the bolt and operating in the slot of the plate, and means for operatively con necting the pin to the bolt.

7. In a lock, a bolt, a sleeve member therefor movable along the bolt, and means for moving said member and said bolt longitudinally while maintaining said member and bolt against relative angular movement and for rotating said bolt and member through its same angle together in the extended position of the bolt.

8. In a lock, a casing, a rotatable bolt adapted to be projected out of said casing, a sleeve movable along said bolt, means for guiding said sleeve for longitudinal movement only at the beginning oi' the bolt projecting movement and at the end of the bolt retracting movement, means including a stationary plate for controlling the rotarymovement of said bolt, said plate rotatably supporting said sleeve and bolt, and a movable plate in said casing for controlling the longitudinal movement of said bolt and having a slot and pin connection with said sleeve, said movable plate, bolt and sleeve being arranged so that upon movement of the movable plate in bolt projecting direction, the bolt and sleeve are rst moved longitudinally as a unit and then rotated.

9. In a lock, a casing, a rotatable bolt movable out of the casing, a pair of plates within said casing said plates rotatably supporting said bolt, a sleeve movable along said bolt on the rotation of said sleeve, means forming a connection between the sleeve, the plates and the bolt at the end of its movement out of the casing and at the beginning of its movement into the casing, means operable from the exterior of said casing for moving one of said plates, and means for normally preventing relative movement in any direction between the bolt and sleeve until said bolt has been fully rojected out of said casing in the locking operation and in the unlocking operation after the bolt has been rotated, and acting to cause said bolt and sleeve to move together in a longitudinal irection.

l0. In a lock, a casing, a rotatable bolt movable out of said casing, a sleeve for said bolt movable in said casing, means connecting said sleeve and bolt to prevent relative rotary motion of said bolt and sleeve but allowing relative longitudinal mo tion thereof in the extended position of said bolt, means for controlling the longitudinal movement of the bolt, said means including a cover for the sleeve shaped to prevent the rotation of the bolt until the latter has been extended, a vmovable plate guided within said casing and having a pin and slot connection with the sleeve, a crank arm kpivotally mounted in the front wall of said casing, a crank arm pivotally mounted in the cover of said casing, means for connecting each crank arm to said movable plate, spring means to actuate each crank to complete its movement about its pivot, and key actuated means to turn said crank.

11. In a lock, a bolt, and bolt extending and rotating means, comprising a stationary plate having a slot partly disposed in the direction of the movement of said bolt and partly diagonal, a reciprocatory plate in said lock having a slot disposed across the direction of the movement of said bolt, a sleeve slidable on said bolt, guide walls 0n said bolt for guiding said sleeve longitudinally along said bolt but preventing the rotary motion of said sleeve relative to said bolt, and a key actuated member adapted to move one of said plates and said sleeve, rst to move the bolt out of the casing during the bolt extending operation and then to rotate the bolt.

12. In a lock, bolt extending and rotating devices, comprising a bolt, a stationary and a reciprocatory plate, a cam connection between the stationary plate and the bolt, a slot and pin connection between the bolt and the reciprocatory plate, a sleeve movable on said bolt interposed between said plates, said sleeve having a pair of radially disposed projections engaging said plates respectively, a guide way formed on said bolt for guiding said sleeve and means to move one of said plates.

13. In a lock, the combination of a casing, a bolt extendible out of said casing and rotatable about an axis substantially in a direction of extending vmovement of said bolt, said bolt having a shoulder intermediate of its length, a movable member within said casing and forming a bearing for rotatably and slidably supporting that portion of the bolt innermost of said shoulder, means for causing said movable member and said bolt to move together and then to cause said movable member to move lengthwise of said portion of said bolt, means responsive to said last-mentioned movement of said movable member to rotate said bolt, means for locking said movable member in position and said bolt against retraction, a sleeve movable on said bolt, means for guiding said sleeve longitudinally along said bolt but preventing rotary motion of said sleeve relatively to said bolt, a lever rotatably mounted in the front wall of the casing, a pin projecting from said lever and engaging said movable member, and a knob secured to said lever for operating the lever to actuate said movable member and said sleeve.

14. In a lock, the combination of a casing, a bolt extendible out of said casing and rotatable about an axis extending substantially in the direction of extending movement of said bolt, said bolt having a shoulder intermediate its length, a movable member within said casing and forming a bearing for rotatably and slidably supporting that portion of the bolt innermost of said shoulder, means for causing said movable -member and said bolt to move together and then to cause said movable member to move lengthwise of said portion of said bolt, means responsive to said last mentioned movement of said movable member to rotate said bolt, means for locking said movable member in position, and said bolt against 2,078,248 'plate for said casing provided with a guide slot retraction, a sleeve movable on said bolt, means for guiding said sleeve longitudinally along said bolt but preventing rotary motion of said sleeve relatively to said bolt, and key operated means to actuate said movable member and sleeve.

15. In a lock, a casing, a pair of bolts rotatably mounted in said casing and disposed symmetrically about the central longitudinal line thereof, means to rotate said bolts in unison, said means including a longitudinally movable plate having a pair of transversely disposed slots at one end thereof, said slots being arranged at right angles to the center lines of the bolts, a pin projecting from each bolt and entering each slot formed in said plate, an arm rotatably mounted in the front wall of said casing and having an operative connection with the other end of said plate to move the same, resilient means associated with said arm for holding said plate in forward and rearward position, and key operated means to actuate the lock.

16. In a lock, a casing, a pair of bolts rotatably mounted in said casing, a pin projecting from each bolt, a plate slidably mounted in said casing and having a pair of slots arranged at right angles to the direction of movement of said plate, said pins being arranged to enter the slots, an arm rotatably mounted in the front wall of the casing to move the plate whereby the pins move in the slots during the rotary movement of said bolts, resilient means associated with said arm for holding said plate in forward or rearward position, and a knob fastened to the arm to actuate the same.

17. In a lock, a casing, a pair of locking bolts rotatably mounted in said casing, means to operate the bolts, said means comprising a longitudinally movable plate, a slot and pin connection between said plate and said bolts, the slots of said connection being arranged at right angles to the direction of movement of the plate, said pins being arranged to move in said slots in unison in one direction when the bolts are in their operative state, and moving in the opposite direction when said bolts are in their inoperative state, an arm rotatably mounted in the front Wall of the casing to move the plate, and a knob to rotate the arm.

18. In a lock, a casing, a pair of bolts rotatably mounted in said casing, each of said bolts carrying a pin, a plate slidably mounted in said casing, a pair of symmetrically disposed slots formed in said plate, at right angles to the direction of longitudinal movement of the same, said pins adapted to slide in said slots in unison during the movement of said plate, and key operated means to operate the lock.

19. In a lock, a casing, a pair of bolts rotatably mounted in said casing and disposed symmetrically -relative to the central longitudinal line thereof, a pin projecting from each bolt, a plate slidingly mounted in said casing and having a pair of slots extending at substantially right angles to the direction of longitudinal movement of said plate, each of said pins having an operative engagement with each slot of the plate, an arm rotatably mounted in the front wall of said casing to move said plate for transmitting rotary movement to said bolts, each pin being adapted to move in each slot during the rotation of said bolts, resilient means associated with said arm for holding said plate in forward or rearward position, and key actuated means to operate the lock.

JOHN HOL'IZMAN. 

